Well the KTM factory bike race teams use Rotella Synthetic. And there have been multiple oil analysis that have shown that many of your "motorcycle" oils contain far more Moly than many of your "non" motorcycle oils.
Rotella is designed for high shear loads, which is exactly what these quad engines need and after the thousands and thousands of miles everyone has put on their quads/dirtbikes/road machines using Rotella there is not doubt that it is clutch safe.
2007 Outlaw 525 (#315Q) AC Racing Blackline ProPeg nerfs, Wilson Racing suspension, Precision steering stabilizer, Flexx Bars 15*, Rath Racing anti vib mounts, Rath Racing MX grab bar w/supports, Oury, Pit Posse Outlaw shifter, Vapor computer, JD Jet kit, big O-ring, YFZ throttle mod, Pro design filter, CT Racing full exhaust, RAZR 2, for sand-20x10x10 Edge on Douglas .160.
2007 Predator 500 LE
350 Raptor, 2008 250 Raptor, 2006 Jetmoto 150, 50 Raptor
2007 Outlaw 90(#384M) 2008 Class A 14 and under state champion
2006 Predator 90 (#705M) 10 and under 2nd place in state